Automatic weighing device



Dec. 24, 1929. w, TIMSON AUTOMATIC WEIGHING DEVICE Filed Aug. 29, 1927 [nvnfior William Tzmson km Attorney 50 resistant.

Patented Dec. 24, 1929 UETE STATES PATENT OFFICIE WILLIAM TIMSON, OF BIRMINGHAM, ENGLAND, ASSIGNOR TO .V. 8a '1. AVERY LIMITED, OF BIRMINGHAM, ENGLAND AUTOMATIC .VEIGEING DEVICE Application filed August 29, 1927, Serial No.

, of the fan type which is simple in construction, etlicient in operation and capable of being produced at a relatively low cost.

The invention consists of an improved automatic weighing apparatus of the kind hereinbefore referred to wherein a goods plate supporting means is mounted upon a lever preferably of the first order and has connection through a check stay to a pivotally mounted link located within the housing of the indicating 1 echanism said check stay being provided intermediate its length with a bracket or projection adapted to be con-- nected to a resistant mechanism of known construction. The invention also resides in the method of pivotally connecting the link to the check stay and to the link supporting means. a

The invention will now be described in conneat-ion with the accompanying sheet of drawings wherein Figure 1 is a front elevation of the weighing scale with the base and indicator housing shewn in section.

Figure 2 is a part sectional end elevation of the scale seen in Figure 1.

Figure 3 is a detail view to an enlarged scale of the means of pivotally connecting the link to the check stay, and

Figure 4 is an end view of Figure 3.

The goods plate 5 is mounted on the upper end of a cylindrical pillar 6 the lower portion whereof terminates in a substantially U shaped bracket the downwardly depending arms 6 whereof are provided with bearing blocks 7 whicn co-operate with knife edges 8 fixed adjacent the end of the arm 8 of a lever of the first order. This lever is fulcrumed on knife edges 8 supported in bearings 9 carried by brackets 9 secured to the base 10 adjacent the centre thereof whereby the aforesaid lever may be wholly located within'a base housing 11 secured to the base 10. The other arm 8 of. the lever is loaded and constitutes a portion of the weighing The base 10 has secured on the 216,277, and in Great Britain May 12, 1927.

underside thereof adjustable feet 10 for permitting of the accurate levelhng of the scale in known manner.

Secured to the pillar 6 is one end of thehorizontal section 12 of a check stay, the other end of the said horizontal section being attached to a vertically disposed section 12 which, in turn, is connected to a further vertically disposed portion 12. The upper section of the section 12 is cranked so that the whole of the said section as well as the section 12" may be disposed in a housing 13 within which is located the indicating mechanism, the said housing 13-being supported on the base housing 12 and disposed to one end thereof in the ordinary manner. The upper end of the section 12 of the check stay is pivotally connected to one end of a check link 14 the other end whereof is pivotally connected to a bracket 15 pivotally connected to a lug carried by the housing 13. ,The bracket 15 cooperates with a pair of set screws 15 which admit of the adjustmentof the said bracket 15 in a vertical plane as may be required. In order to permit of access to the screws 15 the indicator housing 13 is provided with an aperture adjacent the said screws, the aperture normally being closed by a readily detachable plate 13.

The check stay and the check link 1 1 have secured thereto by n'ieans of screws 17 bent sheet metal member 16 the upper portions of which-are cranked upwardly and then inwardly the inwardly turned portion 16 be ing formed of a substantially triangular shape in cross section as is clearly seen in Figure 3. The inwardly turned portions 16 are passed through circular apertures 1 1 formed adjacent the ends of the check link said apertures 14 being of a diameter substantially equal to the length of the base of the triangular section whereby the aplces of the base of the said section 1t; contact with the walls of the aperture and constitute line bearings Secured to the section 12 of the check stay is a bracket 18 to the end whereof is attached the lower end of a flexible ribbon 19 the other end of which is secured to the 20- supported in bearing blocks 21 supported by a bracket 22 fixed to the housing 13. The cam 20 has attached thereto a screwed rod 23 upon which is adjustably mounted a pendulous resistant 24:. The cam 20 has a tached thereto also indicating pointers 25 which register with a graduated chart 26 mounted in the upper portion of the indicator hous ing 18 in the normal manner.

Disposed within an aperture formed in the base 10 is a dashpot 27 the piston 27 Whereof has a pivotal connection with an extension 12 of the horizontal arm 12" of the check stay.

A scale constructed as hereinbefore described is simple in construction, eificient in operation and capable of being produced at a relatively low cost.

lVhat I claim is 1. A fully automatic weighing apparatus of the fan type comprising a base, a lever fulcrumed on said base, a single scale plate, a supporting means for said scale plate mounted on one end of said lever, a check stay comprising a horizontal section and a plurality of vertical sections the horizontal section having connection with the aforesaid gooc s plate supporting means, a housing, a pendulous resistant mechanism located in said housing, a check link pivotally mounted in the upper portion of said housing said check link having a pivotal connection at one end with the upper end of the vertical portion of the check stay, a bracket secured to one end of one of the vertical sections of the check stay and means for connecting the said bracket to the pendulous resistant mechanism.

2. A fully automatic weighting apparatus of the fan type comprising a base, a lever fulcrumed on said base, a single scale plate, a supporting means for said scale plate mounted on one end of said lever, a check stay comprising a horizontal section and a plurality of vertical sections thehorizontal section having connection with the aforesaid goods plate supporting means, a housing, a pendulous resistant mechanism located in said housing, a check link pivotally mounted in the upper portion of said housing said check link having a. pivotal connection at one end with the upper end of the vertical portion of the check stay, a bracketsecured to one end of one of the vertical sections of the check stay, means for connecting the said bracket to the pendulous resistant mechanism, a pivotally mounted bracket for sup porting the other end of the check link and means for adjusting the setting of the said bracket.

3. A fully automatic weighing apparatus of the fan type comprising a base, a base housing. a lever of the first order fulcrumed on said base and disposed within said base housing, a single scale plate, a supporting means pivotally mounted on one end of said lever, a

check stay having a horizontal section and a plurality of vertically disposed sections the horizontal section having connection with the aforesaid scale plate supporting means, an indicator housing, a pendulous resistant mechanism located within said housing, a check link disposed within the upper portion of said indicator housing said check link having a pivotal connection at one end with the upper end of one of the vertical portions of the check stay, a pivotally mounted bracket for supporting the other end of the check link, means for effecting the adjustment of said bracket, a projecting bracket secured to one end of the vertical sections of the check stay and means for connecting said projecting bracket to the aforesaid pendulous resistant mechanism.

4:. A fully automatic weighing apparatus of the fan type comprising a base, a base housing, a lever of the first order fulcrumed on said base and disposed Within said base housing, a single scale plate, a supporting means for said scale plate pivotally mounted on one end of said lever, a check stay having a horizontal section and a plurality of vertically disposed sections the horizontal section having connection with the aforesaid scale plate supporting ineans, an indicator housing, a. pendulous resistant mechanism located within said housing, a check link disposed within the upper portion of said indicator housing said check link having a. pivotal con nection at one end with the upper end of the vertical portion of the check stay, a pivotally mounted bracket for supporting the other end of the check link, means for effecting the adjustment of said bracket, a projecting bracket secured to one end of one of the vertical sections of the check stay, means for con necting said projecting bracket to the aforesaid pendulous resistant mechanism, an extension on the horizontal section of the check stay and a dashpot mounted on the base of the piston rod of said dashpot having connection with the said extension in the check stay.

In testimony whereof I have signed my name to this specification.

lVTLLIAM TIMSON. 

